Lando Norris said Max Verstappen benefitted from a rule "no one agrees with" as he won a dramatic Sao Paulo Grand Prix to leave the McLaren's title hopes hanging by a thread.
Verstappen surged to a terrific victory from 17th on the grid in Brazil, with Norris faltering after starting on pole.
Norris and Mercedes' George Russell – who were vying for the lead – both pitted on lap 29, but that strategy backfired as the red flag was shown following a crash involving Franco Colapinto.
With the race suspended, Verstappen was also able to change tires for the restart, negating Norris' advantage from pitting as the world champion raced to a commanding victory.
Norris had cut Verstappen's drivers' championship lead to 44 points by winning Saturday's sprint race but now sits 62 points adrift with just three races of the season remaining.
The Brit refused to hit out at McLaren's strategy after the race, though, putting his struggles down to bad luck.
"I have faith in the team in what they are saying and they have trust in me," he told Sky Sports F1.
"It was just unlucky. I don't care about the hindsight side of things, that's luck for them, nothing more.
"They got lucky on a rule that no one agrees with. Probably they agreed with it today but every driver has disagreed with it in the past.
"Today it benefitted them, it could have benefitted us if we just stayed out, but that's a stupid thing to think of.
"Just a bit unlucky today, nothing more. Of course, disappointing. Max drove well. He got a bit lucky but that's life."